Squamous Cell Papilloma, Esophagus, Rat
Papillomas appear as wart-like lesions, varying in size from 0.1 to 0.5 cm in diameter. They may be either peduncular with a long thins stalk, or sessile with a short broad stalk. They usually appear as multiple lesions disseminated throughout the entire mucosal surface of the esophagus, although they have tendency to locate more commonly at the areas of anatomic narrowing of the esophagus: the pharyngeo-esophageal junction, the anulus at the bifurcation of the trachea, and the cardial region (Fig. 238).
SynonymsKeratotic papilloma hyperkeratotic papilloma nonkeratizing papilloma papillomatosis
Unable to display preview. Download preview PDF.
- Cardesa A, Ovelar MY, Mohr U (1982) Experimental esophageal neoplasms in the rat: histogenetic pathways and comparison with the developmental stages of cancer of the esophagus in man. In: Pfeiffer CJ (Ed) Cancer of the esophagus, vol II. CRC, Boca Raton, Fl, chap 13, pp 199–213Google Scholar
- Levison DA, Hopwood D, Morgan RGH, Coghill G, Milne G A, Wormsley KG (1979) Oesophageal neoplasia in male Wistar rats due to parenteral di(2-hydroxylpropyl)-nitrosamine (DHPN): a combined histopathological, histochemical and electron microscopic study. J Pathol 129: 31–361PubMedCrossRefGoogle Scholar
- Ming S-C (1973) Tumors of the esophagus and stomach. In: Atlas of tumor pathology, 2nd ser, fasc 7. Armed Forces Institute of Pathology, Washington, DC, p 11Google Scholar